*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #f6efe4;
  --surface:     #fffaf3;
  --nav-bg:      #12303a;
  --nav-text:    #9bb8c0;
  --nav-hover:   #dce8ea;
  --nav-active:  #f6efe4;
  --text:        #1a2a30;
  --text-muted:  #4a5f66;
  --text-light:  #6d8288;
  --accent:      #e07a3d;
  --accent-dark: #c45e28;
  --teal:        #2a7a8c;
  --silver:      #c9bba8;
  --border:      #e4d6c4;
  --nav-w:       240px;
  --right-w:     280px;
  --ui:          Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  --display:     Fraunces, "Times New Roman", serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--ui);
  font-size: 1rem;
  line-height: 1.55;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
}

/* ── Sidebar ──────────────────────────────────────── */
.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--nav-w);
  background: var(--nav-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 0 3rem;
  z-index: 100;
  overflow-y: auto;
  transition: transform 0.28s ease;
  box-shadow: 4px 0 20px rgba(18, 48, 58, 0.28);
}
.sidebar-brand {
  text-align: center;
  padding: 2.1rem 1.4rem 0.7rem;
  width: 100%;
  position: sticky;
  top: 0;
  z-index: 5;
  background: var(--nav-bg);
  border-bottom: 1px solid rgba(224, 122, 61, 0.32);
}
.sidebar-search-btn {
  position: absolute;
  top: 0.85rem; right: 0.9rem;
  background: none; border: none; cursor: pointer;
  color: var(--nav-text); opacity: 0.7;
  padding: 0.3rem; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}
.sidebar-search-btn:hover { opacity: 1; background: rgba(255,255,255,0.08); }
.brand-mark { display: inline-block; }
.brand-icon {
  display: block; width: 44px; height: 44px; margin: 0 auto 0.55rem;
  border: 1px solid rgba(224, 122, 61, 0.5); border-radius: 10px;
}
.brand-title {
  font-family: var(--display);
  font-size: 1.7rem; font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--nav-active);
  line-height: 1; margin-bottom: 0.28rem;
}
.brand-sub {
  font-size: 0.78rem; font-weight: 400;
  letter-spacing: 0.04em; color: var(--nav-text);
}
.sidebar-rule { width: 36px; height: 2px; background: var(--accent); margin: 0.9rem auto 0.7rem; border-radius: 2px; }

.sidebar nav { width: 100%; }
.sidebar nav ul { list-style: none; }

.nav-social-link {
  display: flex; align-items: center; gap: 0.75rem;
  min-height: 44px;
  padding: 0.45rem 1.5rem;
  font-size: 0.95rem; font-weight: 500;
  color: var(--nav-text); text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.nav-social-link:hover { color: var(--nav-hover); background: rgba(255,255,255,0.04); }
.nav-social-link.active { color: var(--nav-active); border-left-color: var(--accent); background: rgba(255,255,255,0.06); }
.nav-social-link svg { opacity: 0.75; flex-shrink: 0; }
.nav-social-link:hover svg, .nav-social-link.active svg { opacity: 1; }

.nav-badge {
  display: none; margin-left: auto;
  min-width: 18px; height: 18px; padding: 0 5px;
  border-radius: 999px; background: var(--accent); color: #fff;
  font-size: 0.68rem; font-weight: 700;
  align-items: center; justify-content: center;
}
.nav-badge.visible { display: flex; }

.sidebar-post-wrap { padding: 0.9rem 1.5rem 0.4rem; width: 100%; }
.sidebar-post-btn {
  display: block; width: 100%;
  background: var(--accent); color: #fff;
  border: none; border-radius: 24px;
  padding: 0.72rem 1rem;
  font-family: var(--ui);
  font-size: 0.95rem; font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: background 0.18s;
}
.sidebar-post-btn:hover { background: var(--accent-dark); }

.sidebar-auth {
  display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
  padding: 0.9rem 1.5rem 0.2rem; width: 100%;
  border-top: 1px solid rgba(155, 184, 192, 0.18); margin-top: 0.8rem;
}
.sidebar-auth-user { display: flex; align-items: center; gap: 0.55rem; max-width: 100%; }
.sidebar-auth-avatar {
  width: 30px; height: 30px; border-radius: 50%; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 0.75rem; font-weight: 700; background: var(--teal);
}
.sidebar-auth-name {
  font-size: 0.85rem; color: rgba(246,239,228,0.9);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.sidebar-auth-btn {
  font-size: 0.8rem; letter-spacing: 0.04em;
  background: none; border: 1px solid rgba(155,184,192,0.4);
  color: var(--nav-text); border-radius: 18px;
  padding: 0.32rem 1.1rem; cursor: pointer;
}
.sidebar-auth-btn:hover, .sidebar-auth-btn.primary {
  background: var(--accent); color: #fff; border-color: var(--accent);
}

.nav-legal {
  display: flex; align-items: center; justify-content: center; gap: 0.45rem;
  padding: 0.9rem 1.4rem 1.4rem;
  font-size: 0.72rem; color: rgba(155,184,192,0.65);
}

/* ── Main ─────────────────────────────────────────── */
.main {
  margin-left: var(--nav-w);
  margin-right: var(--right-w);
  flex: 1;
  min-height: 100vh;
  min-width: 0;
  transition: margin-left 0.28s ease, margin-right 0.28s ease;
}
.page { display: none; }
.page.active { display: block; min-height: 100vh; }

.page-header { padding: 2.2rem 1.6rem 0.4rem; }
.page-kicker {
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 0.4rem;
}
.page-header h1 {
  font-family: var(--display);
  font-size: 2rem; font-weight: 700; letter-spacing: 0.01em;
}
.page-rule { width: 40px; height: 3px; background: var(--accent); margin: 0.7rem 0 0; }
.page-body { padding: 1.2rem 1.6rem 3rem; }

/* ── Right panel ──────────────────────────────────── */
.right-panel {
  position: fixed;
  inset: 0 0 0 auto;
  width: var(--right-w);
  background: var(--nav-bg);
  display: flex; flex-direction: column;
  z-index: 100; overflow-y: auto;
  box-shadow: -4px 0 20px rgba(18, 48, 58, 0.28);
  transition: transform 0.28s ease;
}
.right-panel-header {
  padding: 3.8rem 1.4rem 1rem;
  border-bottom: 1px solid rgba(224, 122, 61, 0.32);
  flex-shrink: 0;
}
.right-panel-kicker {
  font-size: 0.7rem; font-weight: 700;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: #e8a070; margin-bottom: 0.4rem;
}
.right-panel-title {
  font-family: var(--display);
  font-size: 1.25rem; font-weight: 700;
  letter-spacing: 0.02em; color: var(--nav-active);
}
.right-panel-body { flex: 1; padding: 0.4rem 0; overflow-y: auto; }
a.news-item {
  display: block; padding: 1rem 1.4rem;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  text-decoration: none; cursor: pointer;
}
a.news-item:hover { background: rgba(255,255,255,0.07); }
.news-item-tag {
  font-size: 0.68rem; font-weight: 700;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: #7ec8c4; margin-bottom: 0.35rem;
}
.news-item-headline {
  font-size: 0.92rem; font-weight: 600; line-height: 1.4;
  color: #f0f4f7; margin-bottom: 0.35rem;
}
.news-item-snippet { font-size: 0.8rem; line-height: 1.5; color: #b8c5cf; margin-bottom: 0.3rem; }
.news-item-meta { font-size: 0.75rem; color: #8aa0b0; }
.right-panel-footer {
  padding: 0.9rem 1.4rem;
  border-top: 1px solid rgba(155,184,192,0.18); flex-shrink: 0;
}
.right-panel-footer p { font-size: 0.75rem; color: #8aa0b0; line-height: 1.55; }

body.right-collapsed .right-panel { transform: translateX(100%); }
body.right-collapsed .main { margin-right: 0; }
body.right-collapsed .profile-overlay,
body.right-collapsed .chat-overlay,
body.right-collapsed .notif-overlay,
body.right-collapsed .explore-overlay { right: 0; }

.right-panel-tab {
  position: fixed; z-index: 400;
  right: var(--right-w); top: 50%;
  transform: translateY(-50%);
  width: 22px; height: 48px;
  background: var(--nav-bg);
  border-radius: 6px 0 0 6px; border: none;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; box-shadow: -3px 0 8px rgba(0,0,0,0.18);
  transition: background 0.18s, right 0.28s ease;
}
.right-panel-tab:hover { background: var(--accent); }
.right-panel-tab svg { color: rgba(255,255,255,0.7); transform: scaleX(-1); transition: transform 0.28s; }
body.right-collapsed .right-panel-tab { right: 0; }
body.right-collapsed .right-panel-tab svg { transform: scaleX(1); }
@media (max-width: 1100px) { .right-panel-tab { display: none; } }

.news-page-list { display: flex; flex-direction: column; gap: 0.8rem; }
.news-page-list a.news-item {
  background: var(--surface); border: 1px solid var(--border); border-radius: 10px;
  padding: 1.05rem 1.15rem;
}
.news-page-list a.news-item:hover { background: #fff; }
.news-page-list .news-item-tag { color: var(--teal); }
.news-page-list .news-item-headline { color: var(--text); }
.news-page-list .news-item-snippet { color: var(--text-muted); }
.news-page-list .news-item-meta { color: var(--text-light); }

/* ── Feed tabs + compose ──────────────────────────── */
.thoughts-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky; top: 0; z-index: 5;
}
.thoughts-tab {
  flex: 1; text-align: center;
  padding: 1rem 0.4rem;
  font-size: 0.82rem; font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  background: none; border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
}
.thoughts-tab:hover { color: var(--text); background: rgba(18,48,58,0.03); }
.thoughts-tab.active { color: var(--text); border-bottom-color: var(--accent); }

.thoughts-compose-wrap {
  padding: 1.1rem 1.3rem 0;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.thoughts-compose-row { display: flex; gap: 0.85rem; align-items: flex-start; }
.thoughts-compose-avatar {
  flex-shrink: 0; width: 42px; height: 42px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.7rem; font-weight: 700; color: #fff;
  background: var(--nav-bg); letter-spacing: 0.02em;
}
.thoughts-compose-right { flex: 1; min-width: 0; }
.thoughts-compose-input {
  width: 100%; border: none; outline: none; resize: none;
  background: transparent;
  font-family: var(--ui);
  font-size: 1.05rem;
  color: var(--text); line-height: 1.5;
  min-height: 52px; max-height: 200px;
  padding: 0.45rem 0 0.4rem;
}
.thoughts-compose-input::placeholder { color: var(--text-light); }
.thoughts-compose-divider { height: 1px; background: var(--border); margin: 0.4rem 0; }
.thoughts-compose-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.4rem 0 0.85rem;
}
.thoughts-toolbar { display: flex; align-items: center; gap: 0.05rem; }
.thoughts-toolbar-btn {
  background: none; border: none; cursor: default;
  color: var(--teal); padding: 0.45rem; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}
.thoughts-post-btn {
  background: var(--accent); color: #fff; border: none;
  border-radius: 999px; padding: 0.48rem 1.15rem;
  font-weight: 600; font-size: 0.88rem; cursor: pointer;
}
.thoughts-post-btn:disabled { opacity: 0.4; cursor: default; }
.thoughts-post-btn:not(:disabled):hover { background: var(--accent-dark); }

.thoughts-feed { background: var(--bg); }

.post {
  display: flex; gap: 0.85rem;
  padding: 1rem 1.3rem 0.85rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
.post:hover { background: rgba(255,250,243,0.7); }
.post-avatar {
  flex-shrink: 0; width: 42px; height: 42px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 0.78rem; font-weight: 700;
}
.post-body { flex: 1; min-width: 0; }
.post-meta { display: flex; flex-wrap: wrap; gap: 0.35rem 0.5rem; align-items: baseline; margin-bottom: 0.2rem; }
.post-name { font-weight: 700; font-size: 0.92rem; }
.post-handle, .post-time { color: var(--text-light); font-size: 0.82rem; }
.post-text { font-size: 0.95rem; line-height: 1.5; white-space: pre-wrap; }
.post-actions {
  display: flex; gap: 1.4rem; margin-top: 0.65rem;
  color: var(--text-light); font-size: 0.78rem;
}
.post-action {
  background: none; border: none; cursor: pointer;
  display: inline-flex; align-items: center; gap: 0.3rem;
  color: inherit; font: inherit;
}
.post-action:hover { color: var(--accent); }
.post-action.liked { color: var(--accent); font-weight: 600; }
.post-empty { padding: 2.2rem 1.4rem; color: var(--text-light); text-align: center; }

/* ── Overlays (sit in the center column) ──────────── */
.profile-overlay, .chat-overlay, .notif-overlay, .explore-overlay {
  display: none;
  position: fixed;
  top: 0; left: var(--nav-w); right: var(--right-w); bottom: 0;
  background: var(--bg);
  z-index: 300;
  overflow-y: auto;
  flex-direction: column;
  transition: left 0.28s ease, right 0.28s ease;
}
.profile-overlay.active, .notif-overlay.active, .explore-overlay.active { display: flex; }
.chat-overlay.active { display: flex; flex-direction: row; background: var(--surface); overflow: hidden; }
body.nav-collapsed .profile-overlay,
body.nav-collapsed .chat-overlay,
body.nav-collapsed .notif-overlay,
body.nav-collapsed .explore-overlay { left: 0; }
@media (max-width: 1100px) {
  .profile-overlay, .chat-overlay, .notif-overlay, .explore-overlay { right: 0; }
}

.view-topbar, .notif-header, .explore-search-wrap {
  position: sticky; top: 0; background: var(--bg); z-index: 2;
}
.view-topbar {
  display: flex; align-items: center; gap: 0.8rem;
  padding: 0.85rem 1.2rem;
  border-bottom: 1px solid var(--border);
}
.view-topbar-title { font-weight: 700; }
.view-topbar-sub { font-size: 0.75rem; color: var(--text-light); }
.view-back, .ghost-btn, .accent-btn, .chat-new-btn, .chat-send-btn {
  font-family: var(--ui); cursor: pointer;
}
.view-back {
  background: none; border: none; color: var(--accent);
  font-weight: 600; font-size: 0.88rem; padding: 0.4rem 0.2rem;
}
.ghost-btn {
  background: none; border: 1px solid var(--border); border-radius: 999px;
  padding: 0.35rem 0.85rem; font-size: 0.8rem; font-weight: 600; color: var(--text);
}
.ghost-btn:hover { border-color: var(--accent); color: var(--accent); }
.accent-btn {
  background: var(--accent); color: #fff; border: none; border-radius: 999px;
  padding: 0.55rem 1.15rem; font-weight: 600;
}
.accent-btn:hover { background: var(--accent-dark); }

.profile-signin-prompt { padding: 3rem 1.6rem; max-width: 420px; }
.profile-signin-prompt h2 { font-family: var(--display); font-size: 1.8rem; margin-bottom: 0.5rem; }
.profile-signin-prompt p { color: var(--text-muted); margin-bottom: 1.2rem; }
.profile-banner { height: 140px; background: linear-gradient(120deg, var(--nav-bg), var(--teal) 55%, var(--accent)); }
.profile-header-row {
  display: flex; justify-content: space-between; align-items: flex-end;
  padding: 0 1.4rem; margin-top: -28px;
}
.profile-avatar {
  width: 72px; height: 72px; border-radius: 50%;
  border: 3px solid var(--bg); background: var(--nav-bg); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 1.2rem;
}
.profile-id { padding: 0.9rem 1.4rem 1.4rem; }
.profile-display-name { font-weight: 700; font-size: 1.15rem; }
.profile-handle { color: var(--text-light); font-size: 0.88rem; margin-bottom: 0.45rem; }
.profile-bio { margin-bottom: 0.4rem; }
.profile-meta { color: var(--text-muted); font-size: 0.85rem; }
.profile-counts { display: flex; gap: 1.1rem; margin-top: 0.7rem; }
.count-btn { background: none; border: none; cursor: default; font: inherit; color: var(--text-muted); }
.count-btn strong { color: var(--text); }
.profile-posts { border-top: 1px solid var(--border); }
.empty-note { padding: 1.6rem; color: var(--text-light); }

/* Chat */
.chat-threads {
  width: 280px; flex-shrink: 0;
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column; background: var(--surface);
}
.chat-threads-header { padding: 1rem 1rem 0.7rem; border-bottom: 1px solid var(--border); }
.chat-threads-title-row { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.65rem; }
.chat-threads-title { font-family: var(--display); font-size: 1.4rem; font-weight: 700; letter-spacing: 0.02em; }
.chat-new-btn {
  background: var(--nav-bg); color: #fff; border: none; border-radius: 999px;
  padding: 0.28rem 0.7rem; font-size: 0.75rem; font-weight: 600;
}
.chat-search-input, .explore-search-input {
  width: 100%; border: 1px solid var(--border); border-radius: 999px;
  padding: 0.45rem 0.85rem; background: var(--bg); outline: none; font: inherit; font-size: 0.88rem;
}
.chat-search-input:focus, .explore-search-input:focus { border-color: var(--teal); }
.chat-thread-list { overflow-y: auto; flex: 1; }
.chat-thread-item {
  display: flex; gap: 0.7rem; padding: 0.8rem 1rem; cursor: pointer;
  border-bottom: 1px solid var(--border);
}
.chat-thread-item:hover, .chat-thread-item.active { background: rgba(42,122,140,0.08); }
.chat-thread-item .post-avatar { width: 36px; height: 36px; font-size: 0.7rem; }
.thread-name { font-weight: 600; font-size: 0.88rem; }
.thread-preview { font-size: 0.78rem; color: var(--text-light); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.chat-active-pane { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.chat-placeholder { margin: auto; text-align: center; padding: 2rem; max-width: 360px; }
.chat-placeholder-title { font-family: var(--display); font-size: 1.8rem; font-weight: 700; margin-bottom: 0.4rem; }
.chat-placeholder-sub { color: var(--text-muted); margin-bottom: 1.1rem; }
.chat-thread-view { flex: 1; display: flex; flex-direction: column; min-height: 0; }
.chat-thread-header { padding: 0.9rem 1.1rem; border-bottom: 1px solid var(--border); font-weight: 700; }
.chat-messages { flex: 1; overflow-y: auto; padding: 1rem; display: flex; flex-direction: column; gap: 0.55rem; }
.chat-bubble {
  max-width: 80%; padding: 0.55rem 0.8rem; border-radius: 14px;
  font-size: 0.88rem; line-height: 1.4;
}
.chat-bubble.them { background: #efe6d8; align-self: flex-start; }
.chat-bubble.me { background: var(--nav-bg); color: #fff; align-self: flex-end; }
.chat-compose {
  display: flex; gap: 0.5rem; padding: 0.75rem 1rem;
  border-top: 1px solid var(--border);
}
.chat-compose-input {
  flex: 1; border: 1px solid var(--border); border-radius: 16px;
  padding: 0.5rem 0.8rem; resize: none; font: inherit; font-size: 0.9rem; outline: none;
}
.chat-send-btn {
  background: var(--accent); color: #fff; border: none; border-radius: 999px;
  padding: 0.45rem 0.9rem; font-weight: 600; font-size: 0.82rem;
}

.notif-header { padding: 0.5rem 1.2rem 0; border-bottom: 1px solid var(--border); }
.notif-header-row { display: flex; align-items: center; justify-content: space-between; padding: 0.4rem 0 0.5rem; }
.notif-title { font-family: var(--display); font-size: 1.5rem; font-weight: 700; letter-spacing: 0.02em; }
.notif-item {
  display: flex; gap: 0.75rem; padding: 1rem 1.3rem;
  border-bottom: 1px solid var(--border);
}
.notif-item.unread { background: rgba(224,122,61,0.08); }
.notif-item p { font-size: 0.9rem; }
.notif-item time { font-size: 0.75rem; color: var(--text-light); }

.explore-search-wrap { padding: 0.85rem 1.2rem 0.4rem; }
.explore-search-bar { display: flex; align-items: center; gap: 0.5rem; color: var(--text-light); }
.explore-pane { display: none; padding: 1rem 1.2rem 2rem; }
.explore-pane.active { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 0.8rem; }
.explore-card {
  display: block; background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
  padding: 1rem; cursor: pointer; text-decoration: none; color: inherit;
}
.explore-card:hover { border-color: var(--teal); }
.explore-card-tag { font-size: 0.68rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--teal); margin-bottom: 0.3rem; }
.explore-card-title { font-weight: 700; margin-bottom: 0.25rem; }
.explore-card-snippet { font-size: 0.82rem; color: var(--text-muted); }

/* ── Auth modal ───────────────────────────────────── */
.conv-modal-overlay {
  position: fixed; inset: 0; background: rgba(18,48,58,0.62);
  display: flex; align-items: center; justify-content: center;
  z-index: 9500; opacity: 0; pointer-events: none; transition: opacity 0.2s;
}
.conv-modal-overlay.open { opacity: 1; pointer-events: all; }
.conv-modal {
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
  padding: 2rem 2.1rem; width: 100%; max-width: 420px;
  box-shadow: 0 20px 60px rgba(18,48,58,0.3); position: relative;
}
.conv-modal h2 { font-family: var(--display); font-size: 1.9rem; font-weight: 700; letter-spacing: 0.01em; margin-bottom: 0.35rem; }
.conv-modal-note { font-size: 0.82rem; color: var(--text-muted); margin-bottom: 1rem; }
.conv-modal-close {
  position: absolute; top: 0.65rem; right: 0.65rem;
  background: none; border: none; font-size: 1.7rem;
  cursor: pointer; color: var(--text-muted);
  width: 40px; height: 40px; border-radius: 50%;
}
.conv-modal-close:hover { color: var(--text); background: rgba(0,0,0,0.06); }
.conv-modal-tabs { display: flex; border-bottom: 1px solid var(--border); margin-bottom: 1.2rem; }
.conv-modal-tab {
  background: none; border: none; cursor: pointer;
  font-size: 0.8rem; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 0.55rem 1rem; color: var(--text-light);
  border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.conv-modal-tab.active { color: var(--accent); border-bottom-color: var(--accent); }
.conv-modal-field { display: flex; flex-direction: column; gap: 0.28rem; margin-bottom: 0.85rem; }
.conv-modal-field label {
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--teal);
}
.conv-modal-field input {
  font: inherit; font-size: 0.95rem; color: var(--text); background: var(--bg);
  border: 1px solid var(--border); padding: 0.58rem 0.8rem;
  outline: none; border-radius: 8px;
}
.conv-modal-field input:focus { border-color: var(--accent); }
.conv-modal-submit {
  width: 100%; padding: 0.72rem; border: none; cursor: pointer; border-radius: 50px;
  background: var(--nav-bg); color: #fff;
  font-size: 0.85rem; font-weight: 600; letter-spacing: 0.06em;
  margin-bottom: 0.55rem;
}
.conv-modal-submit:hover { background: var(--accent); }
.conv-modal-divider {
  text-align: center; font-size: 0.8rem; color: var(--text-light);
  margin: 0.55rem 0; position: relative;
}
.conv-modal-divider::before, .conv-modal-divider::after {
  content: ''; position: absolute; top: 50%;
  width: calc(50% - 1.5rem); height: 1px; background: var(--border);
}
.conv-modal-divider::before { left: 0; }
.conv-modal-divider::after { right: 0; }
.conv-google-btn {
  width: 100%; padding: 0.72rem; background: #fff;
  border: 1px solid var(--border); cursor: pointer; border-radius: 50px;
  font-size: 0.88rem; font-weight: 600; color: #202124;
  display: flex; align-items: center; justify-content: center; gap: 0.5rem;
}
.conv-google-btn:hover { background: #f7f7f7; }
.conv-guest-btn {
  width: 100%; padding: 0.4rem; margin-top: 0.4rem;
  background: transparent; border: none; cursor: pointer;
  font-size: 0.78rem; font-weight: 500; color: var(--text-muted);
}
.conv-guest-btn:hover { color: var(--text); text-decoration: underline; }
.conv-modal-err { font-size: 0.82rem; color: var(--accent); margin-bottom: 0.55rem; display: none; }
.conv-modal-err.show { display: block; }

/* ── Hamburger ────────────────────────────────────── */
.hamburger {
  display: flex; position: fixed;
  top: 0.9rem; left: 0.9rem; z-index: 500;
  background: transparent; border: none;
  width: 42px; height: 42px; cursor: pointer;
  flex-direction: column; align-items: center;
  justify-content: center; gap: 5px;
  border-radius: 4px;
}
.hamburger:hover { background: rgba(255,255,255,0.07); }
.hamburger span {
  display: block; width: 20px; height: 1.5px;
  background: var(--nav-text);
  transition: transform 0.25s ease, opacity 0.2s ease, background 0.2s;
  transform-origin: center;
}
.hamburger span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

body.nav-collapsed .sidebar { transform: translateX(-100%); }
body.nav-collapsed .main { margin-left: 0; }
body.nav-collapsed .hamburger span:nth-child(1),
body.nav-collapsed .hamburger span:nth-child(2),
body.nav-collapsed .hamburger span:nth-child(3) { transform: none; opacity: 1; }
body.nav-collapsed .hamburger span { background: var(--text); }
body.nav-collapsed .hamburger:hover { background: rgba(0,0,0,0.07); }

.nav-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(18,48,58,0.52); z-index: 350; cursor: pointer;
}

@media (max-width: 1100px) {
  .right-panel { display: none; }
  .main { margin-right: 0; }
}

@media (max-width: 900px) {
  :root { --nav-w: 0px; }
  .sidebar {
    width: min(300px, 88vw);
    transform: translateX(-100%);
    z-index: 400;
    box-shadow: 8px 0 28px rgba(0,0,0,0.28);
  }
  .main { margin-left: 0; }
  .profile-overlay, .chat-overlay, .notif-overlay, .explore-overlay { left: 0; }
  .hamburger span:nth-child(1),
  .hamburger span:nth-child(2),
  .hamburger span:nth-child(3) { transform: none; opacity: 1; }
  .hamburger span { background: var(--text); }
  .hamburger:hover { background: rgba(0,0,0,0.07); }
  body.nav-open .sidebar { transform: translateX(0); }
  body.nav-open .nav-overlay { display: block; }
  body.nav-open .hamburger span { background: var(--nav-text); }
  body.nav-open .hamburger span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
  body.nav-open .hamburger span:nth-child(2) { opacity: 0; transform: scaleX(0); }
  body.nav-open .hamburger span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }
  .thoughts-tabs { padding-left: 3.8rem; }
  .view-back, .notif-header { padding-left: 3.8rem; }
  .chat-threads { width: 100%; border-right: none; }
  .chat-active-pane { display: none; }
  .chat-overlay.thread-open .chat-threads { display: none; }
  .chat-overlay.thread-open .chat-active-pane { display: flex; }
}

@media (max-width: 480px) {
  .conv-modal { padding: 1.5rem 1.2rem; margin: 0 1rem; }
  .post { padding: 0.9rem 1rem; }
}